diff --git a/beacon_chain/consensus_object_pools/block_clearance.nim b/beacon_chain/consensus_object_pools/block_clearance.nim
index e0bf9efae..bdf06aea9 100644
--- a/beacon_chain/consensus_object_pools/block_clearance.nim
+++ b/beacon_chain/consensus_object_pools/block_clearance.nim
@@ -316,7 +316,8 @@ proc addBackfillBlock*(
         head = shortLog(dag.head)
       quit 1
 
-    dag.backfill = blck.toBeaconBlockSummary()
+    # Signal that we're done by resetting backfill
+    reset(dag.backfill)
     dag.db.finalizedBlocks.insert(blck.slot, blockRoot)
     dag.updateFrontfillBlocks()
 
diff --git a/beacon_chain/consensus_object_pools/blockchain_dag.nim b/beacon_chain/consensus_object_pools/blockchain_dag.nim
index 031759695..057d7c35f 100644
--- a/beacon_chain/consensus_object_pools/blockchain_dag.nim
+++ b/beacon_chain/consensus_object_pools/blockchain_dag.nim
@@ -856,7 +856,7 @@ proc init*(T: type ChainDAGRef, cfg: RuntimeConfig, db: BeaconChainDB,
         "low to be loadable")
 
       db.getBeaconBlockSummary(backfillRoot).expect(
-        "Backfill block must have a summary")
+        "Backfill block must have a summary: " & $backfillRoot)
     else:
       withBlck(tailBlock): blck.message.toBeaconBlockSummary()
 
@@ -935,7 +935,7 @@ proc init*(T: type ChainDAGRef, cfg: RuntimeConfig, db: BeaconChainDB,
     summariesDur = summariesTick - loadTick,
     finalizedDur = finalizedTick - summariesTick,
     frontfillDur = frontfillTick - finalizedTick,
-    keysDur = Moment.now() - finalizedTick
+    keysDur = Moment.now() - frontfillTick
 
   dag.initLightClientCache()